Windows: Testing and Inspection

WINDOWS OPERATION
Both Windows Inoperative
The following circuit test sequence determines whether or not voltage is continuous through the body harness to switch.
1. Remove the Driver door trim panel.
2. Carefully separate wiring harness connector from switch body. Refer to Wiring Diagrams.
3. Using a voltmeter, connect the ground lead to the Pin 3 of the wiring harness connector.
4. Connect the positive lead to Pin 5 of the harness connector and check for battery voltage. If OK, go to Window Switch Test below. If not OK, check circuit breaker in the Micro Relay Bank. If the circuit breaker is OK, repair ground or feed wire as necessary. For wiring, specific connector type and location, refer to Wiring Diagrams.

One Window Inoperative
1. Check the inoperative window switch as described in the Window Switch Test below. If OK perform the Window Motor Test below. Repair as necessary.
2. Refer to the circuit diagrams in Wiring Diagrams.

Ensure that the window glass is free to slide up and down for the power window motor to function properly. If the glass is not free to move up and down, the motor will overload and trip the integral circuit breaker. To determine if the glass is free, disconnect the regulator plate from the glass. Then slide the window up and down by hand.

There is an alternate method to check if the glass is free. Position the glass between the up and down stops. Then, shake the glass in the door. Check that the glass can be moved slightly from side to side, front to rear, and up and down. Then check that the glass is not bound tight in the tracks. If the glass is free, proceed with the diagnosis that follows. If the glass is not free, refer to Body for the door window glass and hardware service and adjustment procedures.